Electric cauterizer.



L. G. RINK.

ELECTRIC CAUTERIZEH. APPLgcATloN FILED 1A/N.31.19H.

Patented July 24, 1917'.

UNITED vsTATns LOUIS G. RINK, OF WILMETTE, ILLINOIS, ASSIGNOR TO SHARP & SMITH,

PATENT OFFICE.

OF CHICAGO,

ILLNOIS, A. CORPORATION OF ILLINOIS.

ELECTRIC CAUTERIZER.

VSpeccaton of Letters Patent., `i Patented July 24C, 1917.

Application filed January 31, 1917. Serial No; 145,656.

To all whom t may concern:

Be it known that I, Louis R1N K, a citizen of the United States, residing at Wilmette, inv the county of Cook and State of Illinois, have invented a new and useful Improvement in` Electric Cauterizers, of which the following is a specification.

My invention relates to certain new and useful improvements in electric cauterizer and is fully described and explained in the specification and shown inthe accompanyinfr drawings, in which: Figure 1 is a sideelevation of my iinproved device; Fig. 2 is a longitudinal section, showing certain parts in elevation;A

Fig. 3 isa longitudinal section through the core and resistance winding; Fig. l is a broken section through the insulating sleeve behind the core; Fig. 5' is a longitudinal section through the insulating thimble at the front end of the handle; Fig. G is an elevation of the terminal-carrying member within the handle, and Fig. 7 is an end view` of the sleeve at the rear of the core.

Referring totheedrawings, 8 is a copper core having at its forward end an'enlarged head 9, the rearedge of the head being reduced to form a shoulder 10. The front face of the head, which is made fiat, is provided With ,a central internally-threaded opening 11, into which a projecting male thread upon (a cauterizing tip 12 may be Screwed to bring the cauterizing tip into ,close contact with the flat surface in the head of the core.

In practice the cauterizing tip 12 will be provided in a variety of forms, sized and shaped, so that any one of a series can `be used with any given cauterizing device. The

shape, form ordimension of the tip, however, is not material to my present invention, and l therefore'show only oney such tra,

ilWound around the core is a resistor 13. l find that the resistor may conveniently be wound in two layers separated byl a layer of mica, sheets ofl mica being inside the inner and outside the outer layer ofthe re- Sistor winding, and when this arrangement is adopted the two terminals of the resistor conveniently occur at the rear end of the winding'.

The rear end .of the core is reduced to receive a sleeve 14 flanged at its rear. end to the saine diameter as the shoulder 10 at the front of the core. The sleeve 14y is preferably 'made vof a. vheat-resistingv insulating material, such as lava, and is provided with opposite pairs of perforations 15, as shown in Fig. et. The heating current is led into the resistor' through wires 16, preferably insulated by glass tubes '17, these lead-in wires being passed throughv onev of the perforations 15 and baek'through another, so as to vform a loop. The adjacent resistor terminal is led out through one of the perforations 15 in the sleeve flange and intertwisted with the lead-in wire, as shown in Fig. 4. ln this way the lead-in wire gets a irm connection with the sleeveand all strain is taken off the relatively delicate resistor wire. 18 is a tubular casing inclosing the core and bearing on the shoulder 10 thereof, fitting the flange of the sleeve 14 and extending lback to inclose the lead-in wires. The rear end of the tubular casing is reduced and threaded to receive a ferrule 19 mounted on a handle 20. lVithin the handle, at the rear end of the tube, `is a lava thimble 21 perforated centrally and also on the two sides for the passage of the lead-in wires. The rear end' of this thiinble is hollowed out to afford a place for the forward end of a terminal piece 22 havingbinding screws 23 which afford an electrical connection between the lead-in wires and a flexible cord which enters the handle through an opening in its rear end, in accordance with common practice.

The parts are assembled into a Erm and unitary structure in the following manner:

24 is a rod threaded at both ends and 25 is a small flat nut screwed on the rod behind its forward end. The rod is threaded into the copper core and the nut is screwed down on the sleeve 1st so as to hold the forward interior parts firmly in position. rThe tubular shell or casing is then slipped into position, the -thimble put upon it and the rear end of the rod 24 is screwed into the terminal pieceuntil the tliiinble 21 is firmly pressed against the tubular casing. This lioldsalll these parts rigidly together. The

electrical connections arefthen made and the handle is thereupon screwed down over the the rare contingency of the resistor burning :t

What I claim as new and desire to securef connection with the front of the' core, 'a j out, the complete core and resistor can readily be replaced by an interchangeable substitute. By the arrangement shown the cauterizing tip is in good heat-conducting relation to the core and yet can readily be' removed without diiculty for the substitution of a tip of differing shape.

I realize that considerable variation is possible in the details of this construction without departing from the spirit of my invention; therefore Ido not intend tolimit myself to the specific vform herein ,shown and 'described except as pointed out vin the following claims, in which it is my intention to claim all the novelty inherent inthe construction as broadly as is permittedby the state of the art.

by' Letters Patent, is

1. An electric cauterizerf-having, injcomf bination, a metallic core, a resistor thereon a removable operating tip having means o cylindrical shell inclosing vthe core` and eX- ha material which isa poor conductor .of

heat andan electrical insulatorin the 'rearl tending nbackward therefrom, a block of insulating material carrying binding screws.

at the rear of the shell, and a rod-threaded in the core and block and holding the parts.

together.4 c 2. An electric cauterizer having, inl combination, a metallic core, a resistor'thei'eon,

a removable operating tip having means of connection with the front of the core, a cylindrical shell inclos' the core and extending backward Vthere rom, a thirnble ,of

of the shell, a block of insulating material carrying binding screws at the rear ofthe thimble and having contactv therewith, and

a rod threaded in the core and in the block of insulating material and passing through the thimble to hold the parts together.

3. An electric cauterizer having, in combination, a metallic. core, a resistor thereon a removable operating tip havin means or connection with the front' of t e ogre, a

. the rear of the core and perforated for the `passage ofl the resistor terminals, a cylinling the parts together.

c and holding the parts together.

` wires looped around the material between' adjacent perforations and secured yto the reblock and holding'the parts together.

flange of a material which is a poor conductor of heat and an electrical insulator at drical shell inclosing thecore,.1itting the flange and. extending backward therefrom, a block of insulating material carrying binding screws at the rear of the shell, and a rod threaded inthe core and block and hold-l `ductorof heat and an electrical insulator at Athev'rear of the core and perforated for the passage of resistor-terminals, a cylindrical -6.5

shell inclosing the core and eXtendingback-z .ward therefrom, a thimble of,v a material electrical vinsulator in the rear of vthe shell, I f 'ablock of insulating material carrying binding screws at vthe rear of the thimble and having engagement therewith, and a rod threaded in the core and in the 'block' 5. An electric cauterizer having, in'iconi.'

a removable operating tip havin means lo connection with` the vfront of t e 'core,` ra

flange of a material 'which is a poor con- -du'ctorA of heat and an electrical insulator at the rear of the core, said flange being provided 'with pairs of perforations, lead-in sistor terminals, a cylindrical shell inclosing the 'core and extending backward there# from, a blockof insulating material carrying bindingscrews at the .rear .ofV the shell, l

and a rod threaded in the coreand in 'said In testimony whereof, I have hereunto setmy hand.

' Louis G. RINK.

7'5 bination, a metallic core', a4 resistor dthereon .l y

sol 

